A cyberattack has disrupted hospital computer systems in several states, forcing some emergency rooms to close and ambulances to be diverted, and many primary care services remained closed on Friday as security experts worked to determine the extent of the problem and resolve it.
In Connecticut, the emergency departments at Manchester Memorial and Rockville General hospital were closed for much of Thursday and patients were diverted to other nearby medical centers.
The “data security incident” began Thursday at facilities operated by Prospect Medical Holdings, which is based in California and has hospitals and clinics there and in Texas, Connecticut, Rhode Island and Pennsylvania.
“We have a national Prospect team working and evaluating the impact of the attack on all of the organizations,” Jillian Menzel, chief operating officer for the Eastern Connecticut Health Network, said in a statement.
Elective surgeries, outpatient appointments, blood drives and other services were suspended, and while the emergency departments reopened late Thursday, many primary care services were closed on Friday, according to the Eastern Connecticut Health Network, which runs the facilities. Patients were being contacted individually, according to the network's website.
Similar disruptions also were reported at other facilities system-wide.
"Waterbury Hospital is following downtime procedures, including the use of paper records, until the situation is resolved,” spokeswoman Lauresha Xhihani, said in a statement. “We are working closely with IT security experts to resolve it as quickly as possible.”
